package io;

import java.io.*;

public class BufferCopyDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis  =new FileInputStream("src/ysx.webp");
        BufferedInputStream bis = new BufferedInputStream(fis);
        FileOutputStream fos = new FileOutputStream("ysx_cp1.jpj");
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        long start = System.currentTimeMillis();
        int b;
        while ((b=bis.read())!=-1){
            bos.write(b);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕，耗时："+(start-end)+"ms");
        bos.close();
        bis.close();
    }
}
